[PATCH 04 of 10] py3: convert kwargs' keys to str using pycompat.strkwargs

[Pulkit Goyal]

# HG changeset patch
# User Pulkit Goyal <7895pulkit at gmail.com>
# Date 1493837661 -19800
#      Thu May 04 00:24:21 2017 +0530
# Node ID 2dac09b43b78e59b4035bd8e45374fa8814456af
# Parent  100e7fc11bf088bfa58532680f8917bf3750599f
py3: convert kwargs' keys to str using pycompat.strkwargs

diff -r 100e7fc11bf0 -r 2dac09b43b78 mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Thu May 04 00:23:09 2017 +0530
+++ b/mercurial/cmdutil.py	Thu May 04 00:24:21 2017 +0530
@@ -1509,7 +1509,8 @@
 
         # write changeset metadata, then patch if requested
         key = self._parts['changeset']
-        self.ui.write(templater.stringify(self.t(key, **props)))
+        self.ui.write(templater.stringify(self.t(key,
+                                    **pycompat.strkwargs(props))))
         self.showpatch(ctx, matchfn)
 
         if self._parts['footer']: